diff --git a/mlir/lib/Conversion/AsyncToLLVM/AsyncToLLVM.cpp b/mlir/lib/Conversion/AsyncToLLVM/AsyncToLLVM.cpp
--- a/mlir/lib/Conversion/AsyncToLLVM/AsyncToLLVM.cpp
+++ b/mlir/lib/Conversion/AsyncToLLVM/AsyncToLLVM.cpp
@@ -411,20 +411,17 @@
 //   ^cleanup: ...
 //   ^suspend: ...
 //
-static Block *addSuspensionPoint(CoroMachinery coro, Value coroState,
-                                 Operation *op) {
+static void addSuspensionPoint(CoroMachinery coro, Value coroState,
+                               Operation *op, Block *splitBlock, Block *resume,
+                               OpBuilder &builder) {
+  Location loc = op->getLoc();
   MLIRContext *ctx = op->getContext();
   auto i1 = LLVM::LLVMType::getInt1Ty(ctx);
   auto i8 = LLVM::LLVMType::getInt8Ty(ctx);
 
-  Location loc = op->getLoc();
-  Block *splitBlock = op->getBlock();
-
-  // Split the block before `op`, newly added block is the resume block.
-  Block *resume = splitBlock->splitBlock(op);
-
   // Add a coroutine suspension in place of original `op` in the split block.
-  OpBuilder builder = OpBuilder::atBlockEnd(splitBlock);
+  OpBuilder::InsertionGuard guard(builder);
+  builder.setInsertionPointToEnd(splitBlock);
 
   auto constFalse =
       builder.create<LLVM::ConstantOp>(loc, i1, builder.getBoolAttr(false));
@@ -457,8 +454,6 @@
       loc, LLVM::ICmpPredicate::eq, coroSuspend.getResult(0), constZero);
   builder.create<LLVM::CondBrOp>(loc, isZero, /*trueDest=*/resume,
                                  /*falseDest=*/coro.cleanup);
-
-  return resume;
 }
 
 // Outline the body region attached to the `async.execute` op into a standalone
@@ -518,8 +513,11 @@
   builder.create<CallOp>(loc, TypeRange(), kExecute, executeArgs);
 
   // Split the entry block before the terminator.
-  Block *resume = addSuspensionPoint(coro, coroSave.getResult(0),
-                                     entryBlock->getTerminator());
+  auto *terminatorOp = entryBlock->getTerminator();
+  Block *splitBlock = terminatorOp->getBlock();
+  Block *resume = splitBlock->splitBlock(terminatorOp);
+  addSuspensionPoint(coro, coroSave.getResult(0), terminatorOp, splitBlock,
+                     resume, builder);
 
   // Await on all dependencies before starting to execute the body region.
   builder.setInsertionPointToStart(resume);
@@ -740,7 +738,7 @@
     if (isInCoroutine) {
       const CoroMachinery &coro = outlined->getSecond();
 
-      OpBuilder builder(op);
+      OpBuilder builder(op, rewriter.getListener());
       MLIRContext *ctx = op->getContext();
 
       // A pointer to coroutine resume intrinsic wrapper.
@@ -760,8 +758,12 @@
       builder.create<CallOp>(loc, TypeRange(), coroAwaitFuncName,
                              awaitAndExecuteArgs);
 
+      Block *splitBlock = op->getBlock();
+
       // Split the entry block before the await operation.
-      addSuspensionPoint(coro, coroSave.getResult(0), op);
+      Block *resume = rewriter.splitBlock(splitBlock, Block::iterator(op));
+      addSuspensionPoint(coro, coroSave.getResult(0), op, splitBlock, resume,
+                         builder);
     }
 
     // Original operation was replaced by function call or suspension point.